Hollow-piston water-valve.



W; L. COOL EV. HOLLOW PISTON WATER VALVE. APPLICATION men mm. 1.

Patnted Aug. 13, mm

UNITED STATES PATENT OFFICE.

WILLIAM I. COOLEY, or SALTVILLE, VIRGINIA, ASSIGNOR T0 WILLIAM R. awson,or I I 1 noanoxn, VIRGINIA.

HOLLOW-PISTON WAT R-VALVE.

Spec i fication of Letters Patent.

h pplication fil'ed March 1, 1917. Serial No. 151,841.

To all whom it may concern:

Be it known that 1, W LLIAM L Coon'air, a.v citizen of the UnitedStates, residing at Saltville, in the county of Smyth and State ofVirginia, have made a certain new and use- Valves, of which thefollowing is a specification; p Figure lis a central longitudinalsection of the valve casing and valve, the tubular valve member beingmoved downward to engage the other valve member.

Fig. 2 is a section on the line 33, Fig. 1. Fig. 3 is a fragmentarysectional view showing the tubular valve member raisedfrom the othervalve member.

Fig. 4 is a detail side view, partlyin section, of the hollow valvemember, the stand pipe and the valve casing, parts being broken away.

The invention has relation to valves including a reciprocatory. hollowvsleeve or piston member, for use mainlyin supplying water to locomotiveengines and fire hydrants, and it consists in the novel construction andcombinations of parts as hereinafter set forth.

In the accompanying drawings illustrating the invention, 4 designatesthe valve casing, having at one side an inlet 5 from the water main,said casing forming a support for the stand-pipe 2, the latter at itslower end revolubly mounted upon the valve casing at 2*.

Mounted within the casing a is a support 7, for a yie ldable valvemember 8, said support being usually in the form of a plug,

fitting in an opening 9 in the bottom of the casing and suitably securedtherein.

Thevalvemember 8 is preferably formed of soft rubber and is providedwith a cylindri'cal base 10, fitting in a cylindrical seat 11 of theplug or support, and with an up wardly extending frusto-conical portion12, having a flattop 13, and side walls of an inclination approachingthe vertical. This member 8 is centrally perforated at 14, a leatherwasher 15 overlying the same and being also ofv frusto conical form, ametal washer 16 overlying the leather washer and being also of -frustoc'0nical form but of lesser diameter than theleather washer, a securingscrew 17 engaging central perforations of the two washers, and thecentral perforations of the valve member 8 and of its support 7 thelatter having an internal screw ful Invention in Hollow -Piston Water Ithread. 'lhis screw has a rounded head 18, the side walls of. whichmerge into the conical side walls of the washer 16.

19 designates the hollow cylindrical or tubular valve member, havingslidin move ment upwardly and downwardly within an opening 20, of the toof the valve casing, provided with a stu ng box 21, the lower end ofsaid tubular member being of an internal diameter slightly less than theex- Patented Aug. ,13, 1918.. V

ternal'diameter of the bottom of the frustoconical portion of the valvemember 8, so

that in the downward movement of the tubular member, the side walls ofthe frusto conical member will be engaged thereby to close the valve andstopthe flow of water previous to or coincident with the engagement ofthe bottom of the tubular member with the top of the base of the othermember. In this way. a wedging engagement of the tubular member with theyleldable valve 'member is accomplished over a comparaand thefrusto-conical or tapered washers facilitate the'passage of the waterinto the stand pipe when the valve is open.

The tubular valve member 19 at its upper portion fits closely at 22within the lower end of the stand pipe 2, having slidingmovementtherein, and is provided at its upper end- 'with a cross-arm 23, thelower end of the operating rod 24 for the valve having connection withsaid cross-arm. y

It is designed to use a suitable relief valve 01' valves in connectionwith this device in orderto eliminate water hammer or vibration or torelieve undue pressureby the s'udden closing of the valve. Such reliefvalves would ordinarily be added to the valve casing, and forextraordinary pressure it may be desirable to place a reliefvalve in theinlet pipe.

I claim: I In a valve, a stationary base, a perforated fruste conicalresilient member resting upon said base, a-perforated frnsto-qcnicalwasher, a bolt extending through the perforations of said resilientmember and said. washer and securing the same to said base,-said bolthaV-.

ing an upper tapered head, and -a hollow reciprocat'ory cylindricalmember of vrigid material havingan internal diameter less] thanthediameter of the'lower end portion of said resilient member andgreaterthan I that of .theupperportion thereof,the resili ent member adapted toassume cylindrical form under engagement with the recipll'ocatory memberto plug'the end of the latter into the reciprocatcry member when the 20valve is'open. In testimony whereof I aflix my slgnature in presenceof-two w tnesses.

WILLIAM I. GOOLEY.

Witnesses:

E. CI: SCOTT, C. J. Kinsman.

